Math

As for everything else, so for a mathematical theory: beauty can be perceived but not explained. — Arthur Cayley

Math is hard. But the Internet is a beautiful thing.

General resources

• Eric Weisstein's World of Mathematics
• FSU's math library
• The MacTutor History of Mathematics archive
• Math Forum @ Drexel

Free online textbooks

• Multivariable Calculus
• Elements of Abstract and Linear Algebra
• Linear Algebra
• The Hyperbook of Combinatorics
• The Trillia Group's textbooks are freely available for self-stufy.

Competitions/miscellany

Think you're good at math? Prepare to be humbled.

• American Mathematics Competitions
• USAMTS
• Math League
• Putnam

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Last update: 2009-07-12